#include<iostream>
#include<pthread.h>


class LockGuard
{
    public:
    LockGuard(pthread_mutex_t*mutex):_mutex(mutex)
    {
        pthread_mutex_lock(_mutex);
    }
    ~LockGuard()
    {
        pthread_mutex_unlock(_mutex);
    }
    private:
    pthread_mutex_t *_mutex;

};